18522091875 has 90 divisors (see below), whose sum is σ = 35978817468. Its totient is φ = 8448384000.

The previous prime is 18522091871. The next prime is 18522091877. The reversal of 18522091875 is 57819022581.

It is not a de Polignac number, because 18522091875 - 2² = 18522091871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18522091871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 41251651 + ... + 41252099.

Almost surely, 2^18522091875 is an apocalyptic number.

18522091875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18522091875 is a deficient number, since it is larger than the sum of its proper divisors (17456725593).

18522091875 is an frugal number, since it uses more digits than its factorization.

18522091875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935 (or 464 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 48.

Multiplying 18522091875 by its sum of digits (48), we get a square (889060410000 = 942900²).

The spelling of 18522091875 in words is "eighteen billion, five hundred twenty-two million, ninety-one thousand, eight hundred seventy-five".